Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Dependence of Broad-Scale Geographical Variation in Fleshy-Fruited Plant Species Richness on Disperser Bird Species Richness

Ana L. Márquez, Raimundo Real and J. Mario Vargas
Global Ecology and Biogeography
Vol. 13, No. 4 (Jul., 2004), pp. 295-304
Published by: Wiley
Stable URL: http://www.jstor.org/stable/3697438
Page Count: 10
  • Download ($42.00)
  • Subscribe ($19.50)
  • Cite this Item
Dependence of Broad-Scale Geographical Variation in Fleshy-Fruited Plant Species Richness on Disperser Bird Species Richness
Preview not available

Abstract

Aim: We analysed the interdependence of avian frugivore- and fruited plant-species richness at the scale of major river basins across Europe, taking into account several environmental factors along different spatial gradients. Location: Continental Europe and the British Isles. Methods: We focused on wintering birds and autumn/winter fruiting plants, and used major river basins as geographical units and Structural Equation Modelling as the principal analytical tool. Results: The statistical influence of disperser species richness on fleshy-fruited plant species richness is roughly double that of the reverse. Broad-scale variation in frugivore richness is more dependent on environmental factors than on fruited plant richness. However, the influence of disperser richness on plant richness is four times higher than the influence of environmental factors. Environmental influences on both birds and plants are greater than purely spatial influences. Main conclusions: Our results are interpreted as indicating that biotic dispersal of fruits strongly affects broad-scale geographical trends of fleshy-fruited plant species richness, whereas richness of fruited plants moderately affects frugivore richness.

Page Thumbnails

  • Thumbnail: Page 
295
    295
  • Thumbnail: Page 
296
    296
  • Thumbnail: Page 
297
    297
  • Thumbnail: Page 
298
    298
  • Thumbnail: Page 
299
    299
  • Thumbnail: Page 
300
    300
  • Thumbnail: Page 
301
    301
  • Thumbnail: Page 
302
    302
  • Thumbnail: Page 
303
    303
  • Thumbnail: Page 
304
    304